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Process Equipment and Plant Design

Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Increases
Decreases
Remains same
Remains same, only if the number of tube passes does not change

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dt)/ph
(ph - dh)/dh
(ph - dh . dt/2)/ph
(ph - dh)/ph

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Process Equipment and Plant Design
Cooling water fouling factors vary in the range of 0.001 to 0.003

(BTU/hr.ft² . °F)⁻¹
(kcal/hr.m² .°C)⁻¹
(kcal/hr. m. °C)⁻¹
(W/m².°K)⁻¹

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Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.75
0.25
1.25
0.5

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

None of these
Entrainment considerations
Diameter of the column
Vapour density

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Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

7500
15000
1250
2500

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